Chemistry - Complete P-block Question with Solution | TestHub

In acidic solutions protons coordinate with ammonia molecules forming ${\mathrm{NH}}_4^{+}$ ions and ${\mathrm{NH}}_3$ molecules are not available.

In alkaline solutions insoluble $\mathrm{Cu}(\mathrm{OH}{)}_2$ is precipitated which is soluble in excess of any alkali.

Copper hydroxide is an amphoteric substance.

In acidic solutions hydration protects copper ions.